What is the length of the blue segment in A below?

Answer:

x=1y=3

Step-by-step explanation:

i just got it right

x=1 and y=3 are solutions of the system of equations

The given system of equations are

21x+7y=42 .....(1) and

-5x+5y=10....(2)

Multiply equation (1) with 5 and equation 2 with 7 to eliminate y

105x+35y=210..(3)

-35x+35y=70...(4)

Subtract equation 4 from 3

105x+35y+35x-35y=210-70

140x=140

Divide both sides by 140

x=1

Now plug in x value in equation 1

21+7y=42

7y=42-21

7y=21

Divide both sides by 7

y=3

Hence, the solutions of the system of equations are x=1 and y=3

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Final answer:

The solution to the inequality -2x ≤ -10 is found by dividing both sides by -2 and reversing the inequality sign, resulting in C) x ≥ 5.

Explanation:

The expression that represents the solution to -2x ≤ -10 is found by dividing both sides of the inequality by -2. When dividing by a negative number, we must reverse the inequality symbol. Thus, dividing both sides by -2 would give us x ≤ 5. However, since the inequality symbol was reversed, the correct solution is x ≥ 5.

Here are the steps broken down:

Starting with -2x ≤ -10.

Dividing both sides by -2 gives x ≥ 5.

Therefore, the correct answer is C) x ≥ 5.

Answer:

A

[tex]F(x)=-\frac{1}{1500}(x+20)(x+5)(x-15)[/tex]

B

[tex]=> F(x)=-\frac{x^3}{1500}-\frac{x^2}{150}+\frac{11x}{60}+1[/tex]

Step-by-step explanation:

Function and its graphs

Part A

The graph shown in the image corresponds to a cubic function because of its classical infinite branches, three real roots and two extrema values

Part B

Knowing the value of the three roots x=-20, x=-5, and x=15 we can express the cubic function in factored form:

[tex]F(x)=C(x+20)(x+5)(x-15)[/tex]

The value of C will be determined by using any particular point from the graph. Let's use (0,1)

[tex]1=C(0+20)(0+5)(0-15)[/tex]

[tex]C=-\frac{1}{1500}[/tex]

Replacing, we find the factored form of the function

[tex]F(x)=-\frac{1}{1500}(x+20)(x+5)(x-15)[/tex]

The standard form demands to expand all the products and simplify

[tex]F(x)=-\frac{1}{1500}(x^3+10x^2-275x-1500)[/tex]

[tex]=> F(x)=-\frac{x^3}{1500}-\frac{x^2}{150}+\frac{11x}{60}+1[/tex]

Answer:

9 on edge

Step-by-step explanation:

Answer:

C = (5/9)(F-32)

Step-by-step explanation:

F = (9/5)C + 32    (subtract 32 from both sides)

F - 32 = (9/5)C     (multiply both sides by 5/9 and rearrange))

C = (5/9)(F-32)

F = 9/5·C + 32

5F = 9C + 32·5

9C = 5F - 5·32

9C = 5(F - 32)

C = 5(F - 32)/9

Answer:

[tex]\left\{\begin{array}{l}x\ge 0\\ \\y\ge 0\\ \\x+y\ge 20\\ \\3.5x+5y\le 80\end{array}\right.[/tex]

Step-by-step explanation:

Let x be the number of small candles and y be the number of large candles.

Santhi needs to buy at least 20 candles, so

[tex]x+y\ge 20[/tex]

Small candles:

Cost of 1 small candle = $3.50

Cost of x small candles = $3.50x

Large candles:

Cost of 1 large candle = $5.00

Cost of y large candles = $5.00y

Total cost of all candles:

$3.50x + $5.00y

Thus,

[tex]3.5x+5y\le 80[/tex]

Using Desmos, plot the system of two inequalities:

[tex]\left\{\begin{array}{l}x+y\ge 20\\ \\3.5x+5y\le 80\end{array}\right.[/tex]

Answer:

51.5 therms of natural gas

Step-by-step explanation:

19.57/0.38= 51.5

Answer: 51.5 therms

Step-by-step explanation:

$0.38 per therm

amount of money paid/rate=therms used

19.57/0.38=51.5

Answer:

63

Step-by-step explanation:

[(5.5+3)*7]+[(12/3)*2]-4.5

[8.5*7]+[4*2]-4.5

59.5+8-4.5

67.5-4.5

63

point slope form: y-y1=m(x-x1)

coordinate (1,-7):

point y1--7

point x1=1

slope (m)=-23

input into equation:

y-(-7)=-23(x-1)

convert to slope intercept form:

-*-=+ so 7 becomes +7

y+7

distribute -23 in -23(x-1) using the rule: a(b+c)=ab+ac

-23x+23

refine

y+7=-23x+23

perform some inverse operations:

y+7=-23x+23

y+7=-23x+23-7

y=-23x+16

therefore, D. y+7=−23(x−1) equals y=-23x+16 in slope-intercept form

Required equation of the line is y+7 = −23(x−1).

So, Option four is the correct answer.

What is slope?

In mathematics, the slope of a line is the change in the y-coordinate relative to the change in the x-coordinate.

The net change in the y-coordinate is denoted by Δy and the net change in the x-coordinate by Δx.

Thus, the change in the y-coordinate with respect to the change in the x-coordinate is obtained as follows:

m = change in y/change in x = Δy/Δx

Where "m" is the slope of the line.

You can also specify the slope of the line

tan θ = Δy/Δx

So, tan θ is the slope of the line.

In general, the slope of a line gives its steepness and direction. The slope of a line between two points (x1,y1) and (x2,y2) is easily determined by finding the difference in the coordinates of the points. The slope is usually denoted by the letter "m".

Here given,a line, in point-slope form, that passes through (1, −7) and has a slope of −23.

We want to find what is an equation of a line which passes through (1, −7) and has a slope of −23 ?

We know, if a line passes through the point (a,b) and has slope m then equation of the line,

[tex](y - b) = m(x - a)[/tex]

Here,

[tex]a = 1 \\ b = - 7 \\ m = - 23[/tex]

So, required equation is

[tex](y -( - 7)) = ( - 23)(x - 1) \\ (y + 7) = ( - 23)(x - 1)[/tex]

Therefore,required equation of the line is y+7 = −23(x−1).

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Answer:

43:12

Step-by-step explanation:

Answer:

3 7/12 or 43/12

Step-by-step explanation:

It's just 86/24

Answer: 30

Step-by-step explanation:

rs + 2s when r = 8 and s = 3

8(3) + 2(3)

8 * 3 = 24

2 * 3 = 6

24 + 6 = 30

Answer:

30

Step-by-step explanation:

You first plug in the value of s and r into the equation.

(8)(3)+2(3)

Then you solve it.

24+6

30

So, the answer is 30.

Answer:

x=39, y = 5 and z = -4.

Step-by-step explanation:

x + y - 5z = 24

y + z = 1

z = -4

Plug z = -4 into the second equation:

y + -4 = 1

y = 5.

Now plug x = -4 and y = 5 into the first equation:

x + 5 - 5*4 = 24

x = 24 - 5 + 20

x = 39.

Answer:

The maximum revenue that can be generated is $128.13

Step-by-step explanation:

we have

[tex]R(p)=-5.2p^{2}+65p-75[/tex]

where

R(p) represent the amount of revenue in dollars

p the product price

This is a vertical parabola open downward

The vertex represent a maximum

so

The y-coordinate of the vertex represent the maximum revenue that can be generated

Solve by graphing

using a graphing tool

Graph the quadratic equation

The vertex is the point (6.25,128.125)

see the attached figure

the y-coordinate of the vertex is 128.125

therefore

The maximum revenue that can be generated is $128.13

Answer:

19 and 20

Step-by-step explanation:

19^3 = 6859

20^3 = 8000

7201 is between the two numbers.

Answer:b

Step-by-step explanation: because if you subtract 44,640 minus 43,200 which equal 1440

44,640-43,200=1,440

Answer: B) 1440

Step-by-step explanation:

March: 44,640 Minutes

April: 43,200 Minutes

Subtract 44,640-43,200=1440

Answer:

The Standard Form of the Equation is A. 2x - 5y = -15

Step-by-step explanation:

Given points: (-5, -1) and (10, -7).

Find the slope:

m = (y - y1)/(x - x1)

= -1 - (-7)/-5 - 10

= -1 + 7/-15

= 6/-15

m = -2/5

You already had the point slope form:

y - y1 = m(x - x1)

y - (-7) = -2/5(x - 10)

y + 7 = -2/5(x - 10)

The rest of the question is looking for the standard form of the equation:

Ax + By = C

Begin by solving the point slope form for y:

y + 7 = -2/5x + 20/5

y + 7 = -2/5x + 4

y = -2/5x - 3

Now, put the equation into the standard form:

y + 2/5x = -3

Multiply by 5, and place x first:

2x + 5y = -15, the Standard form of the Equation

Prove by setting x = 0 and finding the y intercept:

5y + 2(0) = -15

5y = -15

y = -3, giving the y intercept, when x = 0 as -3 or (0, -3)

Hope this helps!! Have an Awesome Day!!  :-)

Answer:

1) The values of 'a' and 'b' are [tex]$ \frac{3}{4} $[/tex] and [tex]$ \frac{3}{4} $[/tex] respectively.

2) The values of 'a' and 'b' are '3' and '-3' respectively.

Step-by-step explanation:

1) Given: [tex]$ \frac{3x}{(x - 2)(3x + 2)} = \frac{a}{x - 2} + \frac{b}{3x + 2} $[/tex]

We solve this by partial fraction method.

Taking LCM in the RHS we get,

[tex]$ \frac{3x}{(x - 2)(3x + 2)} = \frac{a(3x + 2) + b(x - 2)}{(x - 2)(3x + 2)} $[/tex]

[tex]$ \implies 3x = a(3x + 2) + b(x - 2) $[/tex]

To find the value of 'a', substitute x = 2. This would make 'b' vanish leaving an equation with 'a'.

[tex]$ \therefore 3(2) = a(3.2 + 2) + b (2 - 2) \implies 6 = a(8) $[/tex]

[tex]$ \implies a = \frac{-2}{3} $[/tex]

Now, Substitute [tex]$ x = \frac{-2}{3} $[/tex] to solve for 'b'.

[tex]$ \implies 3(\frac{-2}{3}) = a (3.\frac{-2}{3} + 2) + b(\frac{-2}{3} -2) $[/tex]

[tex]$ \implies -2 = b \frac{-8}{3} $[/tex]

[tex]$ \implies b = \frac{3}{4} $[/tex]

Therefore, a = [tex]$ \frac{3}{4} $[/tex] and b = [tex]$ \frac{3}{4} $[/tex]

2) Given [tex]$ \frac{3}{x^2 - 5x + 6} = \frac{a}{x - 2} + \frac{b}{x - 3} $[/tex]

We follow the same procedure as (1).

Taking LCM we get

[tex]$ \frac{3}{x^2 - 5x + 6} = \frac{a (x - 3) + b(x - 2)}{(x^2 - 5x + 6)} $[/tex]

[tex]$ \implies 3 = a(x - 3) + b(x - 2) $[/tex]

Substituting x = 2, we get:

3 = a(-1) [tex]$ \implies a = -3 $[/tex]

Also, Substituting x = 3, we get:

3 = b(1)

[tex]$ \implies b = 1 $[/tex]

Therefore, the values of a and b are -1 and 1 respectively.

Answer: 11

Step-by-step explanation: The factors of 88 are 1,2,4,8,11,22,44,88; The factors of 121 are 1,11,121.

Final answer:

To find the greatest common factor (GCF) of 88 and 121, determine the common factors through their prime factorizations, which results in 11 as the GCF.

Explanation:

The greatest common factor (GCF) of 88 and 121 can be found by determining the largest number that can evenly divide both numbers. To find the GCF:

Answer: The answer is D

Answer:

Step-by-step explanation:

Hope this Helps ;)

Multiplication: (-2)(3) = -6

Division: (-2)/(3) = [tex]-\frac{2}{3}[/tex] or -0.67

Answer:

3+2i

Step-by-step explanation:

(3+2i)(1)

3+2i

THe fraction is:

 X

----------

2X + 5

Decreases the numerator and denominator by 1, the fraction becomes 3/8.

So now the fraction looks like this:

X-1                   3

--------- =  -----------

2x +5-1            8

Cross multiplies:

8(x-1) = 3 ( 2x +5 -1)

8x - 8 = 3( 2x + 4)

8x - 8 = 6x + 12  <--- distributive right side

8x - 8 - 6x - 12 = 0 <--- everybody moves left,changing signs, to keep leading coefficient of x term positive

2x - 20 = 0 <-- combines like terms

2x = 20 <--- solves for x

x=10

So the fraction 10/25.

(10-1)/(25-1) = 9/24 = 3/8

The original equivalent value of the fraction is A = 19/43

An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.

Given data ,

Let's start by assigning variables to the numerator and denominator of the original fraction. Let x be the numerator and y be the denominator.

Then we can write:

y = 2x + 5 (since the denominator is five more than twice the numerator)

If both the numerator and denominator are decreased by 7, the new fraction can be written as (x-7)/(y-7), and we know that this is equal to 1/3:

(x-7)/(y-7) = 1/3

To solve for x and y, we can start by cross-multiplying to get:

3(x-7) = y-7

Next, we can substitute the expression for y that we derived earlier:

3(x-7) = 2x + 5 - 7

Simplifying this equation gives:

3x - 21 = 2x - 2

Bringing all the x terms to one side and all the constant terms to the other gives:

x = 19

Now that we know the value of x, we can substitute it back into our expression for y:

y = 2x + 5 = 43

Hence , the original fraction is x/y = 19/43

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Answer:

Step-by-step explanation:

Use the Pythagorean theorem:

[tex]leg^2+leg^2=hypotenuse^2[/tex]

We have

[tex]leg=3,\ leg=x,\ hypotenuse=\sqrt{10}[/tex]

Substitute:

[tex]3^2+x^2=(\sqrt{10})^2[/tex]

[tex]9+x^2=10[/tex]             subtract 9 from both sides

[tex]9-9+x^2=10-9[/tex]

[tex]x^2=1\to x=\sqrt1\\\\x=1[/tex]

The correct choices B, C, and D all represent the equation that Conner scored 25% more points than Max, using algebraic terms to demonstrate this proportional increase. Choices B and C show the total score as a multiple of Max's score, while D adds an extra 25% to Max's score.

The problem presented is an algebraic representation of a proportional relationship. Given that Conner scored 25% more points than Max, we can express this relationship in different but equivalent equations. Choices B, C, and D effectively communicate that Conner's score, c, is increased by 25% more than Max's score, m.

Choice B is written as c = (1 + 0.25)m, which represents a 100% (which is 1 in decimal form) of Max's score plus an additional 25%. Choice C simplifies this to c = 1.25m, which is another way to represent a 25% increase on Max's score. Choice D is expressed as c = m + 0.25m which sums Max's score with another 25% of it. Each of these equations correctly translates the scenario into a mathematical expression.

Answer:488

Step-by-step explanation:

1464 divided by 3=488

Answer:

3x + 4y = 50

x + y = 15

Five 4-point questions

Step-by-step explanation:

Change x + y = 15 to determine what y equal

y = (-x) + 15

Plug it in the original equation using the substitution method

3x + 4(-x + 15) = 50

3x - 4x + 60 = 50

Combine like terms:

-x = -10, two negative signs equals a positive. x = 10

Plug 10 in for x in the equation x + y = 15

10 + y = 15

Subtract 10 from both sides

y = 5

Answer:

[tex]1.2 \times 10^{10}[/tex] spents on housing for each year for the state.

Step-by-step explanation:

Given:

Population of State = 2000000

Average Citizen spends on housing = 6000

We need to find total spent on housing for the state.

For finding total spent on housing for state we need to multiply Population of state with average citizen spends on housing.

Total spent on housing for state = Population of State [tex]\times[/tex] Average Citizen spends on housing = [tex]2000000 \times 6000 = 12000000000[/tex]

Now expressing the above in scientific notation we get;

Total spent on housing for state = [tex]1.2 \times 10 ^{10}[/tex]

Final answer:

The total amount spent on housing for a state with a population of 2,000,000, where each spends $6,000 annually, is $12,000,000,000, which is expressed in scientific notation as[tex]$1.2 x 10^{10}.[/tex]

Explanation:

The question asks us to calculate the total amount spent on housing for a state with a population of 2,000,000, where the average citizen spends $6,000 on housing each year. To find the total, we multiply the average spending per citizen by the total number of citizens, which is 2,000,000 citizens times $6,000 per citizen. The calculation is:

2,000,000 x $6,000 = $12,000,000,000

To express this astronomical sum of money in scientific notation, we convert the standard form into a product of a number between 1 and 10 multiplied by a power of 10. So:

$12,000,000,000 = [tex]$1.2 x10^{10}[/tex]

Answer:

14/70 or 1/5

Step-by-step explanation:

Final answer:

Carlo has read 14 out of 70 books about George Washington.

Explanation:

To find the fraction of the books about George Washington that Carlo has read, we need to divide the number of books Carlo has read by the total number of books about George Washington in the library.

Carlo has read 14 books and there are 70 books about George Washington, so the fraction of books Carlo has read is 14/70.